Answer:
D. as an arrangement of four chemical bases
Explanation:
Our DNA is made up of 4 chemical bases (adenine, thymine, guanine, cytosine).
➜ Kidneys are bean-shaped and located at the back of abdomen, one on either side of backbone. Its inner concave surface has a depression called hilum through which renal artery enters and renal vein leaves the kidney. Kidney has two regions: outer cortex and inner medulla. Each kidney has a large number of filtering units called nephrons.
<u>Note</u>: See picture attached to get the idea.
Answer:climate change I believe cause of global warming it’s melting all the permafr0st slowly and it will take time but it’s one day gonna be all gone
Explanation:
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Activation energy.
Concentration.
Temperature.